1940

6.2

1940

5.7

1944

5.6

1942

5.8

2005

2.9

1997

5.6

1985

6.0

1992

4.5

2009

3.9

2007

3.6

2002

4.9

2002

3.7

2001

4.3

2017

3.5

2005

6.3

2016

7.4

1997

4.6

1996

4.6

1997

4.7

1972

6.3